\frame[containsverbatim]
{
  \frametitle{First test of detector}
  \B
  \item In {\tt demoplugin} directory, cd to {\tt bin/net/findbugs/demo/testcode} subdirectory
  \item Run {\tt findbugs -textui -visitors \verb+\+ FindSystemGCInvocations *.class}
  \item Should see debug output from detector:
{\small
\begin{verbatim}
Warn about finalize
Warn about test
Warn about main
\end{verbatim}
}
  \E
}
